Lundin Petroleum said it has completed the Maligan exploration well offshore East Malaysia and encountered significant gas shows.
The well was drilled with the West Prospero jack-up rig to a total depth of 1,380 metres.
The company said the well has now been plugged and abandoned and will be expensed in the first quarter of the year.
Lundin Malaysia holds a 65% working interest in block SB307/308.